High-performance sealing and fixing ball valve

Abstract

The utility model discloses a high-performance sealing and fixing ball valve which comprises a valve body, a valve rod is installed at the top end of the valve body, a baffle is installed at the top end of the valve rod, sealing filler is installed in the valve rod, a single-piston valve seat is installed on one side of the valve rod, and a fixing rod is installed on one side of the single-piston valve seat. The top end and the bottom end of the single-piston valve seat are each provided with a first spring, the double-piston valve seat is installed on the other side of the valve plate, and the top end and the bottom end of the double-piston valve seat are each provided with a second spring. The single-piston valve seat is installed on one side of the valve plate and can be fixed to the valve body through the fixing rod, automatic pressure relief can be achieved through the single-piston valve seat, the two-way sealing function can be achieved through the double-piston valve seat on the other side of the valve plate, the first spring and the second spring both have elasticity, and therefore pressure relief is achieved. The elasticity of the spring enables the sealing effect of the piston valve seat to be better, the sealing filler in the spring can enhance the overall sealing effect of the valve body, and therefore the purposes of fixing the ball valve and enhancing the sealing performance are achieved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a high-performance sealing and fixing ball valve. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. Ball valves are a type of valve. Ball valves are valves in which the opening and closing element is driven by the valve stem and rotates around the axis of the ball valve. They can also be used for fluid regulation and control. Among them, hard-seal V-type ball valves have a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making them particularly suitable for media containing fibers, small solid particles, etc. Multi-port ball valves can not only flexibly control the merging, splitting, and switching of the flow direction of the medium in pipelines, but also close any channel while connecting the other two channels.

[0003] While modern fixed ball valves generally meet most user needs, some problems still exist, as detailed below:

[0004] 1. The problem of difficulty in improving the sealing performance of fixed ball valves. Sealing performance is a very important requirement for valves. The sealing performance of traditional ball valves can be improved. Therefore, the sealing performance of ball valves is high-performance sealing.

[0005] 2. The problem of fixed ball valves being difficult to depressurize and drain: When using ball valves, the air pressure and water pressure inside the valve body may be too high, which may cause damage to the valve body. When the pressure is too high, it is difficult to depressurize. Utility Model Content

[0006] The purpose of this invention is to provide a high-performance sealing fixed ball valve to solve the defects of existing fixed ball valves, such as difficulty in enhancing sealing performance and difficulty in pressure relief and sewage discharge.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-performance sealing and fixing ball valve, including a valve body;

[0008] A valve stem is installed at the top of the valve body, a baffle is installed at the top of the valve stem, sealing packing is installed inside the valve stem, and flanges are installed on both sides of the valve body.

[0009] The valve body is equipped with a support foot at the bottom end, a disassembly structure is installed on both sides of the valve body, a pressure relief structure is installed at the bottom end of the valve body, a mounting plate is installed at the top end of the valve body, a valve plate is installed inside the valve body, and a sealing structure is installed on both sides of the valve plate.

[0010] The sealing structure includes a single-piston valve seat, a fixed rod, a first spring, a second spring, and a double-piston valve seat. The single-piston valve seat is installed on one side of the valve plate, and a fixed rod is installed on one side of the single-piston valve seat. A first spring is installed at both the top and bottom of the single-piston valve seat. The double-piston valve seat is installed on the other side of the valve plate, and a second spring is installed at both the top and bottom of the double-piston valve seat.

[0011] In use, the threaded groove and the inner screw form a threaded connection, and the outer screw and the nut form a threaded connection. The inner screw is screwed into the threaded groove, and then the nut is tightened to fix the valve body together. When the device needs to be disassembled, the nut can be unscrewed, and then the inner screw can be unscrewed to disassemble the valve body. The valve plate can seal the valve body, and the valve plate can be rotated by grasping the valve stem.

[0012] Furthermore, the flange has through holes on its outer side, which are arranged at equal intervals on the outer side of the flange, allowing the flange to be connected to other pipes.

[0013] Furthermore, the disassembly and assembly structure includes a nut, an external threaded rod, an internal threaded rod, and a threaded groove. The threaded groove is located on both sides of the valve body. An internal threaded rod is movably connected inside the threaded groove. An external threaded rod is installed on one side of the internal threaded rod. Disassembly and assembly can be performed by the cooperation of the nut, external threaded rod, internal threaded rod, and threaded groove.

[0014] Furthermore, the outer sidewall of the external screw is uniformly provided with external threads, and the inner sidewall of the nut is uniformly provided with internal threads that cooperate with the external threads. The external screw and the nut are threadedly connected, and the external screw can be screwed into the threaded groove.

[0015] Furthermore, the internal screw and the threaded groove form a threaded connection, and the internal screw is distributed in a ring shape. Tightening the nut can fix the valve body.

[0016] Furthermore, the pressure relief structure includes a plug, a rotating block, a pressure relief pipe, and a pressure relief port. The pressure relief port is located at the bottom end of the valve body, and a pressure relief pipe is installed at the bottom end of the pressure relief port. A rotating block is installed at the bottom end of the pressure relief pipe, and a plug is installed at the bottom end of the rotating block. The pressure can be relieved by opening the plug through the pressure relief pipe and the pressure relief port.

[0017] Furthermore, a locking block is provided at the top of the plug body, and a locking groove is provided at the bottom of the pressure relief port. The plug body and the pressure relief port form a locking structure, which facilitates disassembly.

[0018] The high-performance sealing ball valve provided by this utility model has the following advantages: the sealing performance of the valve body can be enhanced by using a single piston valve seat or a double piston valve seat, making the sealing of the ball valve more stable. When the pressure is too high, the plug body can be opened to release the pressure inside the valve body through the pressure relief pipe and drain the sewage.

[0019] By installing a single piston valve seat on one side of the valve plate, the single piston valve seat can be fixed to the valve body by a fixing rod. The single piston valve seat can realize automatic pressure relief, while the double piston valve seat on the other side can realize bidirectional sealing function. Both the first spring and the second spring are elastic. The elasticity of the springs makes the piston valve seat sealing effect better. The internal sealing packing can also enhance the overall sealing effect of the valve body, thereby achieving the purpose of fixing the ball valve to enhance the sealing performance.

[0020] By installing a pressure relief port at the bottom of the valve body, the rotating block at the bottom of the plug and the thread on the pressure relief pipe form a threaded connection. Tightening the rotating block can drive the plug to be screwed onto the pressure relief pipe. The plug can seal the pressure relief pipe and the pressure relief port. When pressure relief and drainage are required, the plug can be unscrewed to open the pressure relief port and the pressure relief pipe, so as to achieve the purpose of fixing the ball valve for easy pressure relief. Attached Figure Description

[0021] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0022] Figure 2 This is a side sectional view of the present invention.

[0023] Figure 3 For the utility model Figure 1 Enlarged cross-sectional view of a portion of point A in the middle section;

[0024] Figure 4 This is a top view cross-sectional structural diagram of the present invention;

[0025] Figure 5 This is a schematic diagram of a three-dimensional partial cross-sectional structure of the pressure relief structure of this utility model.

[0026] The reference numerals in the figure are as follows: 1. Valve stem; 2. Baffle; 3. Valve body; 4. Valve plate; 5. Sealing structure; 501. Single piston valve seat; 502. Fixed rod; 503. First spring; 504. Second spring; 505. Double piston valve seat; 6. Flange; 7. Disassembly structure; 701. Nut; 702. External thread; 703. Internal thread; 704. Threaded groove; 8. Support leg; 9. Pressure relief structure; 901. Plug; 902. Rotating block; 903. Pressure relief pipe; 904. Pressure relief port; 10. Through hole; 11. Sealing packing; 12. Mounting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-Figure 5 One embodiment of this utility model is a high-performance sealing and fixing ball valve, including a valve body 3.

[0029] A valve stem 1 is installed at the top of the valve body 3, a baffle 2 is installed at the top of the valve stem 1, a sealing packing 11 is installed inside the valve stem 1, and flanges 6 are installed on both sides of the valve body 3. Through holes 10 are provided on the outer side of the flanges 6, and the through holes 10 are arranged at equal intervals on the outer side of the flanges 6.

[0030] The bottom end of the valve body 3 is equipped with a support foot 8. Both sides of the valve body 3 are equipped with a disassembly structure 7. The disassembly structure 7 includes a nut 701, an external screw 702, an internal screw 703 and a threaded groove 704. The threaded groove 704 is located on both sides of the valve body 3. The internal screw 703 is movably connected inside the threaded groove 704. The internal screw 703 and the threaded groove 704 form a threaded connection. The internal screw 703 is distributed in a ring.

[0031] An external thread 702 is installed on one side of the internal thread 703. External threads are evenly provided on the outer side wall of the external thread 702. Internal threads that cooperate with the external threads are evenly provided on the inner side wall of the nut 701. The external thread 702 and the nut 701 are connected by threads.

[0032] Refer to the attached Figure 1-2 and attached Figure 4-5 As shown, the threaded groove 704 and the inner screw 703 form a threaded connection, and the outer screw 702 and the nut 701 form a threaded connection. The inner screw 703 is screwed into the threaded groove 704, and then the nut 701 is tightened to fix the valve body 3 together. When the device needs to be disassembled, the nut 701 can be unscrewed, and then the inner screw 703 can be unscrewed to disassemble the valve body 3. The valve plate 4 can seal the valve body 3, and the valve plate 4 can be rotated by grasping the valve stem 1.

[0033] A pressure relief structure 9 is installed at the bottom of the valve body 3. The pressure relief structure 9 includes a plug 901, a rotating block 902, a pressure relief pipe 903, and a pressure relief port 904. The pressure relief port 904 is located at the bottom of the valve body 3. The pressure relief pipe 903 is installed at the bottom of the pressure relief port 904. The rotating block 902 is installed at the bottom of the pressure relief pipe 903. The plug 901 is installed at the bottom of the rotating block 902. A locking block is provided at the top of the plug 901. A locking groove is provided at the bottom of the pressure relief port 904. The plug 901 and the pressure relief port 904 form a locking structure.

[0034] Refer to the attached Figure 1 and attached Figure 4-5 As shown, the rotating block 902 at the bottom of the plug body 901 and the threads on the pressure relief pipe 903 form a threaded connection. Tightening the rotating block 902 can drive the plug body 901 to be screwed onto the pressure relief pipe 903. The plug body 901 can seal the pressure relief pipe 903 and the pressure relief port 904. When pressure relief and drainage are required, the plug body 901 can be unscrewed, and the pressure relief port 904 and the pressure relief pipe 903 can be opened to perform pressure relief and drainage.

[0035] A mounting plate 12 is installed at the top of the valve body 3, and a valve plate 4 is installed inside the valve body 3. Sealing structures 5 are installed on both sides of the valve plate 4.

[0036] The sealing structure 5 includes a single piston valve seat 501, a fixing rod 502, a first spring 503, a second spring 504, and a double piston valve seat 505. The single piston valve seat 501 is installed on one side of the valve plate 4, and the fixing rod 502 is installed on one side of the single piston valve seat 501. The first spring 503 is installed at both the top and bottom of the single piston valve seat 501. The double piston valve seat 505 is installed on the other side of the valve plate 4, and the second spring 504 is installed at both the top and bottom of the double piston valve seat 505.

[0037] Refer to the attached Figure 1 and attached Figure 3 As shown, the single piston valve seat 501 can be fixed to the valve body 3 by the fixing rod 502. The single piston valve seat 501 can realize automatic pressure relief, and the double piston valve seat 505 on the other side can realize bidirectional sealing function. The first spring 503 and the second spring 504 are both elastic. The elasticity of the spring makes the piston valve seat sealing effect better. The internal sealing packing 11 can also enhance the overall sealing effect of the valve body 3.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-performance sealing fixed ball valve, comprising a valve body (3); Its features are: A valve stem (1) is installed at the top of the valve body (3), a baffle (2) is installed at the top of the valve stem (1), a sealing packing (11) is installed inside the valve stem (1), and flanges (6) are installed on both sides of the valve body (3). The valve body (3) is equipped with a support foot (8) at the bottom end, and a disassembly structure (7) is installed on both sides of the valve body (3). A pressure relief structure (9) is installed at the bottom end of the valve body (3). An installation plate (12) is installed at the top end of the valve body (3). A valve plate (4) is installed inside the valve body (3). A sealing structure (5) is installed on both sides of the valve plate (4). The sealing structure (5) includes a single piston valve seat (501), a fixing rod (502), a first spring (503), a second spring (504), and a double piston valve seat (505). The single piston valve seat (501) is installed on one side of the valve plate (4), and a fixing rod (502) is installed on one side of the single piston valve seat (501). The first spring (503) is installed at both the top and bottom of the single piston valve seat (501). The double piston valve seat (505) is installed on the other side of the valve plate (4), and the second spring (504) is installed at both the top and bottom of the double piston valve seat (505).

2. The high-performance sealing and fixing ball valve according to claim 1, characterized in that: The flange (6) is provided with through holes (10) on its outer side, and the through holes (10) are arranged at equal intervals on the outer side of the flange (6).

3. The high-performance sealing fixed ball valve according to claim 1, characterized in that: The disassembly and assembly structure (7) includes a nut (701), an outer screw (702), an inner screw (703), and a threaded groove (704). The threaded groove (704) is located on both sides of the valve body (3). The inner screw (703) is movably connected inside the threaded groove (704), and the outer screw (702) is installed on one side of the inner screw (703).

4. A high-performance sealing and fixing ball valve according to claim 3, characterized in that: The outer wall of the external screw (702) is uniformly provided with external threads, and the inner wall of the nut (701) is uniformly provided with internal threads that cooperate with the external threads. The external screw (702) and the nut (701) are threadedly connected.

5. A high-performance sealing and fixing ball valve according to claim 3, characterized in that: The internal screw (703) and the threaded groove (704) form a threaded connection, and the internal screw (703) is distributed in a ring.

6. A high-performance sealing fixed ball valve according to claim 1, characterized in that: The pressure relief structure (9) includes a plug (901), a rotating block (902), a pressure relief pipe (903), and a pressure relief port (904). The pressure relief port (904) is located at the bottom end of the valve body (3). The pressure relief pipe (903) is installed at the bottom end of the pressure relief port (904). The rotating block (902) is installed at the bottom end of the pressure relief pipe (903), and the plug (901) is installed at the bottom end of the rotating block (902).

7. A high-performance sealing fixed ball valve according to claim 6, characterized in that: The top of the plug (901) is provided with a locking block, and the bottom of the pressure relief port (904) is provided with a locking groove. The plug (901) and the pressure relief port (904) form a locking structure.

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